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Related Concept Videos

Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
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Glaucoma: Overview

Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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Gyroscope: Precession

Precession can be demonstrated effectively through a spinning top. If a spinning top is placed on a flat surface near the surface of the Earth at a vertical angle and is not spinning, it will fall over due to the force of gravity producing a torque acting on its center of mass. However, if the top is spinning on its axis, it precesses about the vertical direction, rather than topple over due to this torque. Precessional motion is a combination of a steady circular motion of the axis and the...

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Related Experiment Video

Updated: Jul 6, 2026

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane
07:24

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane

Published on: August 22, 2025

An update on acquired nystagmus.

Janet C Rucker1

  • 1Department of Neurological Sciences, Rush University, Chicago, IL 60612, USA. janet_rucker@rush.edu

Seminars in Ophthalmology
|March 6, 2008
PubMed
Summary

Accurate diagnosis of acquired nystagmus involves understanding its type and visual impact. This review covers key features, pathogenesis, and treatments for various acquired nystagmus forms.

Area of Science:

  • Ophthalmology
  • Neurology
  • Neuroscience

Background:

  • Acquired nystagmus necessitates precise characterization for effective management.
  • Understanding nystagmus subtypes is crucial for diagnosis and treatment planning.

Purpose of the Study:

  • To review historical and examination findings in acquired nystagmus.
  • To discuss current concepts in the pathogenesis and treatment of various nystagmus types.

Main Methods:

  • Literature review of acquired nystagmus.
  • Synthesis of information on nystagmus classification and etiology.

Main Results:

  • Detailed examination of gaze-evoked nystagmus.
  • Discussion on nystagmus associated with vision loss.

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Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane
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  • Overview of acquired pendular nystagmus, vestibular nystagmus, and periodic alternating nystagmus.
  • Conclusions:

    • Accurate evaluation requires differentiating nystagmus types.
    • Current understanding of pathogenesis and treatment is evolving for these conditions.